CN102605374B - Corrosion inhibitor for engine coolant - Google Patents
Corrosion inhibitor for engine coolant Download PDFInfo
- Publication number
- CN102605374B CN102605374B CN 201210020451 CN201210020451A CN102605374B CN 102605374 B CN102605374 B CN 102605374B CN 201210020451 CN201210020451 CN 201210020451 CN 201210020451 A CN201210020451 A CN 201210020451A CN 102605374 B CN102605374 B CN 102605374B
- Authority
- CN
- China
- Prior art keywords
- parts
- substance
- engine
- engine coolant
- corrosion inhibitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005260 corrosion Methods 0.000 title abstract description 16
- 230000007797 corrosion Effects 0.000 title abstract description 16
- 239000002826 coolant Substances 0.000 title abstract description 6
- 239000003112 inhibitor Substances 0.000 title abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 15
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims abstract description 14
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims abstract description 12
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims abstract description 8
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 8
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000005639 Lauric acid Substances 0.000 claims abstract description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 6
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims abstract description 4
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims abstract description 3
- -1 octyl group phosphoric acid salt Chemical class 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 229910001369 Brass Inorganic materials 0.000 abstract description 5
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 5
- 239000010951 brass Substances 0.000 abstract description 5
- 239000010949 copper Substances 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- WRKCIHRWQZQBOL-UHFFFAOYSA-N octyl dihydrogen phosphate Chemical compound CCCCCCCCOP(O)(O)=O WRKCIHRWQZQBOL-UHFFFAOYSA-N 0.000 abstract 2
- 239000005725 8-Hydroxyquinoline Substances 0.000 abstract 1
- 239000005711 Benzoic acid Substances 0.000 abstract 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 1
- 235000010233 benzoic acid Nutrition 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 229960003540 oxyquinoline Drugs 0.000 abstract 1
- 238000005476 soldering Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000012467 final product Substances 0.000 description 7
- 150000004880 oxines Chemical class 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 3
- 230000000116 mitigating effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- VLDHWMAJBNWALQ-UHFFFAOYSA-N sodium;3h-1,3-benzothiazole-2-thione Chemical compound [Na+].C1=CC=C2SC(S)=NC2=C1 VLDHWMAJBNWALQ-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Abstract
The invention relates to a corrosion inhibitor for engine coolant, which can take a good effect of inhibiting the corrosion of the main metal of an engine, including red copper, brass, steel, cast iron, soldering tin and cast aluminium. The corrosion inhibitor for the engine coolant comprises 28-32 parts substance A, 2-5 parts of octyl phosphate, 2-4 parts of 8-hydroxyquinoline, 3-5 parts of thiourea, 3-5 parts of 2-mercaptobenzothiazole, 4-6 parts of sodium dodecyl benzene sulfonate and 45-55 parts of isopropyl alcohol, wherein the substance A is prepared by subjecting benzoic acid, lauric acid and diethylenetriamine to reaction.
Description
Technical field
The invention belongs to metallic substance anticorrosion technique field, be specifically related to a kind of corrosion inhibitor for engine coolant and preparation method thereof.
Background technology
Inhibiter in the engine cold liquid, in starting cooling system, played and delayed engine coolant to various corrosions of metal (mainly being: red copper, brass, steel, cast iron, scolding tin, six kinds of metals of cast aluminium), thereby play and prolonged engine, be i.e. the effect in the work-ing life of whole engine-cooling system.
But inhibiter of the prior art is to the corrosion mitigating effect of the various metals in the engine (mainly being: red copper, brass, steel, cast iron, scolding tin, six kinds of metals of cast aluminium) in glycol-cooled liquid, the corrosion mitigating effect that can not play red copper, brass, steel, cast iron, scolding tin, cast aluminium simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of engine glycol-cooled liquid inhibiter, the corrosion mitigating effect that can all play each major metal red copper, brass, steel, cast iron, scolding tin, cast aluminium in the engine simultaneously.
Engine glycol-cooled liquid of the present invention is counted by weight with the inhibiter composition:
The substance A that 28-32 part is obtained by phenylformic acid, lauric acid and diethylenetriamine reaction;
2-5 part octyl group phosphoric acid salt;
2-4 part oxine;
3-5 part thiocarbamide;
3-5 part 2-mercaptobenzothiazole;
4-6 part Sodium dodecylbenzene sulfonate;
45-55 part Virahol.
The preparation method of described substance A is: 200 ℃-210 ℃ under react 5h namely at 0.5: 0.5: 1.1 with phenylformic acid, lauric acid and diethylenetriamine mol ratio.
Above-mentioned substance namely gets engine glycol-cooled liquid inhibiter of the present invention through mixing and stirring.
The present invention with the substance A that obtained by phenylformic acid, lauric acid and diethylenetriamine reaction as host, be solvent with the Virahol, the composite effect that obtains with octyl group phosphoric acid salt, oxine, thiocarbamide, 2-mercaptobenzothiazole, Sodium dodecylbenzene sulfonate, the kind of component and content play conclusive effect in the inhibiter.
Embodiment
Embodiment 1
At 200 ℃-210 ℃ down react 5h at 0.5: 0.5: 1.1 with phenylformic acid, lauric acid and diethylenetriamine mol ratio and namely get substance A;
In weight part, get 30 parts of substance A, 4 parts of octyl group phosphoric acid salt, 3 parts of oxines, 4 parts of thiocarbamides, 4 parts of 2-mercaptobenzothiazoles, 5 parts of Sodium dodecylbenzene sulfonatees and 50 parts of Virahols at room temperature mixing and stirring get final product.
Comparative example 1
In weight part, get substance A that 30 parts of embodiment 1 prepare, 4 parts of octyl group phosphoric acid salt, 3 parts of oxines, 4 parts of thiocarbamides, 4 parts of 2-mercaptobenzothiazoles and 50 parts of Virahols at room temperature mixing and stirring get final product.
Comparative example 2
In weight part, get substance A that 30 parts of embodiment 1 prepare, 4 parts of octyl group phosphoric acid salt, 3 parts of oxines, 4 parts of thiocarbamides, 5 parts of Sodium dodecylbenzene sulfonatees and 50 parts of Virahols at room temperature mixing and stirring get final product.
Comparative example 3
In weight part, get substance A that 30 parts of embodiment 1 prepare, 4 parts of octyl group phosphoric acid salt, 3 parts of oxines, 4 parts of 2-mercaptobenzothiazoles, 5 parts of Sodium dodecylbenzene sulfonatees and 50 parts of Virahols at room temperature mixing and stirring get final product.
Comparative example 4
In weight part, get substance A that 30 parts of embodiment 1 prepare, 4 parts of octyl group phosphoric acid salt, 4 parts of thiocarbamides, 4 parts of 2-mercaptobenzothiazoles, 5 parts of Sodium dodecylbenzene sulfonatees and 50 parts of Virahols at room temperature mixing and stirring get final product.
Comparative example 5
In weight part, get substance A that 30 parts of embodiment 1 prepare, 3 parts of oxines, 4 parts of thiocarbamides, 4 parts of 2-mercaptobenzothiazoles, 5 parts of Sodium dodecylbenzene sulfonatees and 50 parts of Virahols at room temperature mixing and stirring get final product.
Comparative example 6
In weight part, get 4 parts of octyl group phosphoric acid salt, 3 parts of oxines, 4 parts of thiocarbamides, 4 parts of 2-mercaptobenzothiazoles, 5 parts of Sodium dodecylbenzene sulfonatees and 50 parts of Virahols at room temperature mixing and stirring get final product.
The inhibiter of the embodiment of the invention and comparative example 1-6 is carried out glassware corrosion test, simulation use corrosion test, cast aluminium heat transfer corrosion test.The result is respectively shown in following table 1, table 2, table 3.
Table 1 glassware corrosion test result
The corrosion test result is used in table 2 simulation
Table 2 cast aluminium heat transfer corrosion test result
Claims (1)
1. engine glycol-cooled liquid inhibiter, its composition is counted by weight:
The substance A that 28-32 part is obtained by phenylformic acid, lauric acid and diethylenetriamine reaction;
2-5 part octyl group phosphoric acid salt;
2-4 part oxine;
3-5 part thiocarbamide;
3-5 part 2-mercaptobenzothiazole;
4-6 part Sodium dodecylbenzene sulfonate;
45-55 part Virahol.
Wherein, the preparation method of described substance A is: 200 ℃-210 ℃ under react 5h namely at 0.5: 0.5: 1.1 with phenylformic acid, lauric acid and diethylenetriamine mol ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210020451 CN102605374B (en) | 2012-01-19 | 2012-01-19 | Corrosion inhibitor for engine coolant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210020451 CN102605374B (en) | 2012-01-19 | 2012-01-19 | Corrosion inhibitor for engine coolant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102605374A CN102605374A (en) | 2012-07-25 |
| CN102605374B true CN102605374B (en) | 2013-09-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210020451 Expired - Fee Related CN102605374B (en) | 2012-01-19 | 2012-01-19 | Corrosion inhibitor for engine coolant |
Country Status (1)
| Country | Link |
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| CN (1) | CN102605374B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107502311A (en) * | 2017-06-30 | 2017-12-22 | 颍上北方动力新能源有限公司 | A kind of mash welder metal coolant |
| CN110318060A (en) * | 2019-08-15 | 2019-10-11 | 邢台通利光缆材料科技有限公司 | A kind of phosphoric acid cleaning solution corrosion inhibiter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037356A (en) * | 1988-05-03 | 1989-11-22 | 北京师范大学 | Components of anti-icing liquor |
-
2012
- 2012-01-19 CN CN 201210020451 patent/CN102605374B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037356A (en) * | 1988-05-03 | 1989-11-22 | 北京师范大学 | Components of anti-icing liquor |
Non-Patent Citations (6)
| Title |
|---|
| .2001,第9卷(第5期),第59页右栏第2段和图1. * |
| 化工科技> * |
| 叶少林.环保型汽车发动机冷却液的研制.《精细化工中间体》.2001,第31卷(第4期),全文. |
| 王晓波等.车用防冻液概述.< * |
| 王晓波等.车用防冻液概述.<化工科技>.2001,第9卷(第5期),第59页右栏第2段和图1. |
| 环保型汽车发动机冷却液的研制;叶少林;《精细化工中间体》;20010831;第31卷(第4期);全文 * |
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| Publication number | Publication date |
|---|---|
| CN102605374A (en) | 2012-07-25 |
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